Mémoire explicatif de l'invention de Scheibler. Pour introduire une exactitude inconnue avant lui, dans l'accord des instruments de musique - Lecomte, Agustin; Scheibler, Johann Heinrich 1777-1838 (Lille Imprimerie de L. Danel, 1856)
In 1834, Mr Henri Scheibler, a music lover and manufacturer in Crefeld (Prussia), devised a new procedure for rigorously determining the absolute number of vibrations of a given sound. This new procedure enabled him to establish an exact tonometer and a new method for scoring and tuning instruments with a degree of accuracy previously unknown to him.
http://hydraule.org/bureau/biblio/cavaille/det_ton/det_ton.htm
Ex libris Collection Hector Colard (plate)
Keywords: 19th Century (1801-1900); Organology; Acoustics